CS 115 Lab 3, Spring 2015

Deadlines

• Pre-lab: Tu 2/3/2015 at 7 AM
• Writeup and code (lab03e.py): Tu 2/10/2015 at 4 PM
• Demo (parts A and E): Any lab section, workshop, or open tutoring session before Tu 2/10 at 4 PM. Your last chance is the Tuesday tutoring from 3-4 PM.

Goals

Upon successful completion of this lab, you should be able to write and edit Python programs that use:

• definite loops
• ranges
• the accumulator pattern

Pre-Lab Assignment

Click here for the pre-lab instructions.

Even if you didn't get to the pre-lab by the deadline, you should work through it before proceeding with the rest of the lab.

Setup

1. Before you start writing code, you will set up a directory for this assignment on the cwolf server. To connect to cwolf, do one of the following:
   • In Windows... Open PuTTY. Fill in cwolf.cs.sonoma.edu as the hostname, and log in using your CS department username and password.
   • In Mac OS X... Open Terminal. Substitute your CS department username for yourusername in the command below:

     ssh yourusername@cwolf.cs.sonoma.edu

     and type your password when prompted.
2. Enter your CS 115 subdirectory by typing

   cd cs115

3. Type pwd (print working directory) and verify that the output is:
   /home/student/yourusername/cs115
4. Create a directory for Lab 3 by typing

   mkdir lab03

5. Enter your Lab 3 directory by typing

   cd lab03

6. Type pwd again, and verify that the output is:
   /home/student/yourusername/cs115/lab03
7. For now, close Terminal or PuTTY. You will do most of this lab in IDLE.

Lab Instructions

Follow the links below to complete each part of this lab.

1. Sum a list of numbers
2. Draw arbitrary circles
3. Draw a stack of circles
4. Draw a stack of circles using a for-loop
5. Draw a square of circles
6. Submit the assignment